Other popular names that made it onto the map include ... Middle America and the Northwest. Johnson is the next most common name nationwide, ranking first in five states: North and South Dakota ...

Massachusetts claimed the top spot in part because it had the highest average IQ and highest proportion of residents holding ...

The map below shows the results of ... The surname Smith has remained popular throughout America's history, and is the most common family name in 40 states, according to Ancestry.com.